Variation of photovoltage spectra for SnO_2/PS/Si during prior-and post-adsorption

制备了二氧化锡/ 多孔硅/ 硅（SnO2/PS/SI） 异质结构样品，在不同温度下，分别测量样品吸附氢气、液化石油气前后的光生电压谱。结合X 光电子能谱（XPS） 测量结果，分析了光生电压谱变化的机理SnO 2/PS/Si heterojunction structure samples are fabricated.The photovoltage spectra of the samples during prior-and post-adsorption of H 2 or liquified petroleum at different temperature are measured.In combination with the results of XPS measurement,analysis on the variation mechanism of the photovoltage spectra is made.福建省自然科学基

Study of Parameters of Neutron-Irradiated Single Crystal Silicon

在不同温度和红外光照下，测量了经中子辐照的单晶硅表面光电压，确定了其深能级的位置和少子扩散长度；由双能级复合理论，推导了中子辐照单晶硅的深能级复合中心和寿命的计算公式；计算了热中子辐照和高能中子辐照单晶硅后的深能级密度、费米能级和其他有关重要参数。The photovoltage spectra of neutron-irradiated single crystal silicon under inFra-red illumination and at low temperatures are measured.The deep level and minority carrier diFFusion length are determined.By the double-level recombination model,the statistics Formulas of the deep level and liFetime are derived For neutron-irradiated single crystal silicon.Some important parameters of the silicon irradiated with high energy and thermal neutron are calculated respectively.国家自然科学基

Study of Energy Gap Parameter For Porous Silicon

测量了不同电腐蚀条件下制备的多孔硅/硅光伏谱，推导了带隙参数的计算公式.表面光伏谱测量计算值与光致发光的实验结果基本一致.The photovoltaic spectra of porcous silicon/silicon Fabricated by diFFerent electrochemical etching conditions are measured.The calculated Formulae of energy gap are drived.The energy gaps are calculated by surFace photovltaic spectra.The results basically agree with that measured by photoluminescence.国家与福建省自然科学基

苯乙烯/丙烯酸正丁酯/丙烯酸共聚微球的制备及其性能表征

通过乳液聚合法和无皂乳液聚合法制备了苯乙烯／丙烯酸正丁酯／丙烯酸共聚微球。讨论了乳化剂用量、引发剂用量、功能单体、软硬单体用量比等对微球粒径和形态的影响。利用扫描电子显微镜（SEM）、傅立叶变换红外光谱仪（FTIR）对微球的粒径、形貌和表面基团进行分析。红外光谱表明，实验室所制备的苯乙烯／丙烯酸正丁酯／丙烯酸共聚微球表面存在丰富的羧基。利用竖片生长法得到自组装的多层胶体微球薄膜。通过对薄膜的反射光谱测量，发现随着湿度的增加，峰位会产生3nm左右的红移

Preparation and Characterization of Poly (styrene/n-butyl acrylate/acrylic acid) Microspheres

通过乳液聚合法和无皂乳液聚合法制备了苯乙烯/丙烯酸正丁酯/丙烯酸共聚微球.讨论了乳化剂用量、引发剂用量、功能单体、软硬单体用量比等对微球粒径和形态的影响.利用扫描电子显微镜(SEM)、傅立叶变换红外光谱仪(FTIR)对微球的粒径、形貌和表面基团进行分析.红外光谱表明,实验室所制备的苯乙烯/丙烯酸正丁酯/丙烯酸共聚微球表面存在丰富的羧基.利用竖片生长法得到自组装的多层胶体微球薄膜.通过对薄膜的反射光谱测量,发现随着湿度的增加,峰位会产生3nm左右的红移

The Key Factors In Fabrication Of High-Quality Ordered Macroporous Copper Film

The template-directed fabrication of highly-ordered porous film is of significant importance in implementation of the photonic band gap structure. The paper reports a simple and effective method to improve the electrodeposition of metal porous film by utilizing highly-ordered polystyrene spheres (PSs) template. By surface-modification method, the hydrophobic property of the PSs template surfaces was changed into hydrophilic one. It was demonstrated that the surface modi. cation process enhanced the permeability of the electrolyte solution in the nanometer-sized voids of the colloidal template. The homogeneously deposited copper film with the highly-ordered voids in size of less than 500 nm was successfully obtained. In addition, it was found that large defects, such as microcracks in the template, strongly influenced the macroporous films quality. An obvious preferential growth in the cracked area was observed. (C) 2008 Elsevier B. V. All rights reserved